AH - Hannibal's elephants

Here are a couple of articles on Hannibal's elephants. The first one addresses an interesting problem - elephants hate going up hill because of the exceptional amount of energy that it takes for them to go up inclines. This article concerns only African elephants. I haven't found a study that says that Asian elephants are more likely to enjoy climbing, but it is almost certainly true. I worked at a casino that featured Asian elephants as performers, and they had those guys climbing ramps all the time. This seems to lend credence to the argument that Hannibal used Asian elephants.

http://www.newscientist.com/article/dn9607

This next article deals directly with the question of whether Hannibal used African elephants, Asian elephants or forest elephants. I can't find the New Scientist article that this article references. If you do, please post the link. This article is from 1984, so I will also look to see if there are any more recent articles that address these concerns. If it turns out that Hannibal used forest elephants, that would explain why they resembled African elephants, but were able to climb uphill and survive in the alps.

http://www.nytimes.com/1984/09/18/science/the-mystery-of-hannibal-s-elephants.html?sec=health